Agree:

I am in the camp that is concerned about super intelligence. First the machines will do a lot of jobs for us and not be super intelligent...A few decades after that though the intelligence is strong enough to be a concern.

Marvin Minsky
Mathematician, computer scientist, and pioneer in the field of artificial intelligence

The ultimate risk comes when our greedy, lazy, masterminds are able at last to take that final step: to design goal-achieving programs which are programmed to make themselves grow increasingly powerful.

The real danger, then, is not machines that are more intelligent than we are usurping our role as captains of our destinies. The real danger is basically clueless machines being cededauthority far beyond their competence.

Disagree:

I have pretty strong opinions on this. I am optimistic. I think you can build things and the world gets better. But with AI especially, I am really optimistic. I think people who are naysayers and try to drum up these doomsday scenarios — I just, I don't understand it. It's really negative and in some ways I actually think it is pretty irresponsible

Steven Pinker
Johnstone Family Professor in the Department of Psychology at Harvard University

There is not the slightest reason to believe in a coming singularity. The fact that you can visualize a future in your imagination is not evidence that it is likely or even possible. Look at domed cities, jet-pack commuting, underwater cities, mile-high buildings, and nuclear-powered automobiles--all staples of futuristic fantasies when I was a child that have never arrived. Sheer processing power...See More

Predictions that superintelligence is on the foreseeable horizon are not supported by the available data. Moreover, it’s possible that AI systems could collaborate with people to create a symbiotic superintelligence. That would be very different from the pernicious and autonomous kind envisioned by Professor Bostrom